LTspice IV

LTspice IV

LTspice IV is a high performance SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators. Our enhancements to SPICE have made simulating switching regulators extremely fast compared to normal SPICE simulators, allowing the user to view waveforms for most switching regulators in just a few minutes. Included in this download are LTspice IV, Macro Models for 80% of Linear Technology's switching regulators, over 200 op amp models, as well as resistors, transistors and MOSFET models.

LTpowerCAD II

LTpowerCAD II

The LTpowerCAD II design tool is a complete power supply design tool program that can significantly ease the tasks of power supply design with Linear Technology µModule regulators and many other products, mostly monolithic buck step-down regulators. Unlike conventional simulation tools, this LTpowerCAD tool guides users throughout the whole supply design process: it searches suitable LTC parts according to user’s supply specifications; then it guides the user to select and optimize circuit component values with suggestions and warnings. The tool shows real-time results of feedback loop bode plot, as well as the power stage performance. The design can be exported to LTspice simulation circuit for users to further verify their designs. The tool also provides PCB layout examples. Currently, this design tool works on Microsoft Windows based PC with Excel 2000, 2003, 2007, 2010 and 2013. With internet connection, the user can make real time update of the program and its component library. Contact LTpowerCAD@linear.com for questions or support.

LTpowerPlay

LTpowerPlay

LTpowerPlay is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products, including PMBus Power System Managers (such as LTC2974, LTC2977) and DC/DC Power Converters with PSM (LTC3880, LTC3883, LTM4676). The software supports a variety of different tasks. You can use LTpowerPlay to evaluate Linear Technology ICs by connecting to a demo board system. LTpowerPlay can also be used in an offline mode (with no hardware present) in order to build a multi-chip configuration file that can be saved and reloaded at a later time. LTpowerPlay provides unprecedented diagnostic and debug features. It becomes a valuable diagnostic tool during board bring-up to program or tweak the power management scheme in a system or to diagnose power issues when bringing up rails. LTpowerPlay utilizes the DC1613 USB-to-I2C/SMBus/PMBus controller to communicate with one of many potential targets, including the DC1962 evaluation board, or a customer target system. The software also provides an automatic update feature to keep the software current with the latest set of device drivers and documentation. To access technical support documents for PSM products visit the Help menu in LTpowerPlay.

Amplifier Simulation

Spice Models

Download the complete library of LTC op amp SPICE models for general analog circuit simulations. These models are designed for compatibility with LTspice (SwitcherCAD), PSPICE, and PSPICE-compatible simulation programs. They may require a syntax conversion for use with other simulation programs.

The "Configurator" is a design tool that generates the complete schematic for an amplifier stage designed with one of Linear Technology's Gain Selectable Amplifiers: the LT1991, LT1995 and LT1996. With hundreds of combinations, theses amplifiers can be configured for inverting, non-inverting, differencing and even buffered attenuation through simple pin strapping.

Filter Simulation

FilterCAD

FilterCAD 3.0 is a computer aided design program to help users without special expertise in filter design to create filters using Linear Technology's monolithic filter ICs. With FilterCAD, you can design lowpass, highpass, bandpass and notch filters with a variety of responses, including Butterworth, Bessel, Chebychev, elliptic, minimum Q elliptic, and custom responses.

The LT1568 is a dual amplifier block useful for creating high frequency active filters. Implementation of lowpass and bandpass filters over a frequency range of 100KHz to 10MHz can be achieved using only a few external resistors. This easy to use Excel based Design Guide crunches the numbers to calculate all of the external component values and provides a "ready to build" schematic of the filter.

The LT1567 is a low noise (1.4nV/rtHz), 180MHz filter building block. This easy to use Excel based Design Guide crunches the numbers to calculate all of the external component values and provides a "ready to build" schematic of the filter.

Linear Technology FracNWizard is used to communicate with the LTC6947 and LTC6948 synthesizers. It uses the DC590 controller to translate between USB and SPI-compatible serial communications formats. It also includes advanced PLL design and simulation capabilities. You may use it to:

ClockWizard builds on PLLWizard and simplifies the evaluation process of the LTC6950. Besides the ability to design the loop filter components and predict the resulting phase noise and jitter performance, ClockWizard introduces a scope plot which shows the LTC6950 outputs in the time domain and illustrates the phase relationships between the outputs based on their respective EZSync settings. It also controls the LTC6950 demoboard via the DC590 or DC2026. Furthermore, you may it use to:

Silicon-based oscillators are solid state clocks that operate from 1kHz to 170MHz. Each Linear Technology silicon oscillator is frequency programmable via pin-strapping, resistor connection, or serial interface (SPI or I2C).

OscCalc is a quick and easy Excel based tool to help you find the right silicon oscillator for your application. Simply enter a few design requirements and the tool suggests parts, external components and programming settings required for you to get up and running with your design.

To speed and simplify your design process, TimerBlox Designer is an Excel based selection and synthesis tool that allows you to choose and configure the TimerBlox part best suited for your application.

High Speed DAC Evaluation

LTDACGen

The LTDACGen System is designed to demonstrate and support the evaluation of Linear Technology high speed, high performance DACs. The easy-to-use LTDACGen graphical user interface (GUI) enables generation of single and multi-tone data, as well as single- and multi-carrier spread-spectrum signals quickly and conveniently. Data can be previewed and manipulated in both the time and frequency domains. Data can also be exported and imported using straightforward text-based files allowing arbitrary patterns to be sent to the demo-system with a few simple mouse clicks.

The software package also provides an automatic update feature to keep the program current with the latest set of features and fixes.

PScope & Quikeval systems

PScope

The PScope System is a USB-based product demonstration and data acquisition system for use with Linear Technology’s high performance ADCs and signal chain receiver family. The system consists of a USB Data Acquisition Controller board that connects to individual daughter cards for specific Linear Technology ADCs. The software collects and analyzes data from the ADC in both the time and frequency domains and displays relevant parameters for the device being evaluated. PScope allows users to evaluate the SNR, SFDR, THD, as well as other key parameters, quickly and easily. PScope can also perform more complicated calculations such as intermodulation distortion from a 2-tone test, or adjacent channel power ratios (ACPR) from a spread spectrum signal, and supports simultaneous evaluation of multiple channel ADCs.

The software also provides an automatic update feature to keep the software current with the latest set of device drivers.

The QuikEval System is a USB-based product demonstration and data acquisition system for use with Linear Technology’s ADCs, DACs, LED drivers, RF power detectors, PLL Synthesizers, IO-link transceivers, Power and Temperature Monitors, Intelligent Hot Swap Controllers, Battery Chargers and Managers, Coulomb Counters, Power over Ethernet Controllers and more. The system consists of a USB Data Acquisition Controller board that connects to individual daughter cards for specific Linear Technology products. The software also includes web links to the appropriate device data sheets and provides an automatic update feature to keep the software current with the latest set of device drivers.

Temperature Monitoring

LTC2983 Software

The LTC2983 demo software is designed to help configure, program and run the LTC2983. It can configure the LTC2983, save the configuration, check for configuration errors, run the conversion results into a text file, and create Linduino-ready C code based on the configuration. The software can be used by itself, or used in conjunction with the DC2209 demo circuit.